Stemmie is a stem cell that helps us grow big and strong. Stemmie is also our inner physician who repairs any cells that are sick or injured. "When Rick Was Sick" is a story about a little boy who was always tired. One night Rick had a dream about Stemmie and his Wellness Team. Stemmie told Rick about all the things that would help his little cells be strong and healthy so that Rick could be strong and healthy. Soon Rick was feeling so strong that he and his friends.wanted to be like Stemmie's Wellness Team and help the entire world be healthy and happy.